MySQL multiple columns in IN clause

Question

I have a database with four columns corresponding to the geographical coordinates x,y for the start and end position. The columns are:

• x0
• y0

Answer 1

MySQL allows row constructor comparisons like you show, but the optimizer didn't know how to use an index to help performance until MySQL 5.7.

• https://dev.mysql.com/doc/refman/5.7/en/row-constructor-optimization.html